Figure 4From: The use of muscle strength assessed with handheld dynamometers as a non-invasive biological marker in myotonic dystrophy type 1 patients: a multicenter study Relationships between the maximal strength (Day 1 and D 21 values combined; n = 180 trials) of the ankle evertors and dorsiflexors for Quebec and Lyon as estimated with simple linear regression. The equation and coefficients of determination R2 are indicated for each centre.Back to article page